When using the :map
command, you can specify key sequences,
for example <c-a>
which means Ctrl+A, and it is triggered by '\x01' (represented as '^A')
However, there are combinations not possible to send by some Terminal emulators natively, like the famous Ctrl+;, and you should attribute yourself the sequence it should produce, and then you can map it in vim.
But I was wondering, maybe vim already expects some sequences to trigger a sequence, and I would like to know if one can get what sequence triggers a vim key combination (like , or etc.) ?